EclEmma is a free Java code coverage tool for Eclipse, available under the Eclipse Public License. It brings code coverage analysis directly into the Eclipse workbench.
The EclEmma project is also the home of the JaCoCo code coverage library which is the technical back-end for EclEmma and also has integrations with many other build and software quality tools.

SSLScan queries SSL services, such as HTTPS, in order to determine the ciphers that are supported. SSLScan is designed to be easy, lean and fast. The output includes prefered ciphers of the SSL service, the certificate and is in Text and XML formats.

ZenTaoPMS is an open source project management system with product management, project management, bug management, testcase management, doc management, todo management and many other features in one application. ZenTaoPMS is also a scrum tool.

A web-based bug or issue tracker written using ASP.NET, C#, and SQL Server (SQL Server Express too). Probably has all the features you need. Easy to setup. Power and flexibility when you need it. Learn more at http://ifdefined.com/bugtrackernet.html

WatiN (pronounced "what-in") aims to bring you an easy way to automate Web Application Testing in .Net. Inspired by Watir, WatiN has grown into a feature rich and stable framework, offering automation of Internet Explorer and Firefox.

Pexpect is a Python module for spawning child applications; controlling them; and responding to expected patterns in their output. Pexpect can be used for automating interactive applications such as ssh, ftp, passwd, telnet, etc. Pexpect is pure Python.
Note that Pexpect development has moved to Github: https://github.com/pexpect/pexpect

NOTE: Project has moved to github, including file downloads.
SharpPcap is a cross-platform packet capture framework for the .NET environment, based on the famous pcap / WinPcap libraries. It provides an API for capturing, injecting, analyzing and building packets using any .NET language such as C# and VB.NET.

JTrac is a generic issue-tracking web-application that can be easily customized by adding custom fields and drop-downs. Features include customizable workflow, field level permissions, e-mail integration, file attachments and a detailed history view.